icon missing

functions.php

<?php 
/*
- Missing icon fixing
- fontawesome v5
- Use the code from line number 7 to 12 on your child-theme functions.php
*/
add_filter ('dokan_get_dashboard_nav','change_icon',16);
function change_icon($urls){
        $urls['reviews']['icon'] = '<i class="fas fa-comments"></i>';
        $urls['reports']['icon'] = '<i class="fas fa-chart-line"></i>';
       return $urls;
   }